Future Business Leaders of America (FBLA) Cybersecurity Practice Test

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Prepare for the FBLA Cybersecurity Exam. Study with flashcards and multiple-choice questions. Each question includes hints and explanations to help you excel. Get exam-ready now!

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What type of backup only saves changes made since the last backup was performed?

Full backup
Incremental backup
Complete backup
Mirror backup

The correct answer is: Incremental backup

An incremental backup is designed to save only the changes made since the last backup, whether that last backup was a full or another incremental backup. This method is efficient because it reduces the amount of data that needs to be stored each time a backup occurs, leading to lower storage requirements and faster backup times. For instance, if a full backup is completed on a Sunday, an incremental backup done on Monday would only include the data modified on that day. If another incremental backup is done on Tuesday, it captures only the changes made from Monday to Tuesday, and so forth. This allows for quick restoration of data by leveraging the most recent full backup and all subsequent incremental backups. In contrast, a full backup captures everything and requires more storage space and time. A complete backup refers to the same concept as a full backup, while a mirror backup creates an exact copy of the data, which means it can overwrite previous data rather than just storing changes. Thus, the incremental backup method stands out for its efficiency in data management.